Photo shows workers examine and repair the gas transmission device of the starting point of Pipeline 3 of the West-East Gas Transmission in the Horgos operation area of Ili Kazak Autonomous Prefecture, northwest China’s Xinjiang Uygur Autonomous Region. The West-East Gas Transmission Project supports the development of the western regions of China. Over the years, the implementation of the West-East Gas Transmission Project has accelerated the economic leap of Xinjiang and benefited more than 400 cities in China, serving a population of nearly 500 million people.